A root canal is a treatment procedure performed to save the diseased or non-vital pulp in the root canal of the tooth by removing out the necrotic pulp tissue and remolding the canal. The root canal is then packed with gutta percha, a rubber type material, to inhibit the recontamination of the cleansed tooth. A post and/or gold or porcelain or metal crown is placed on the tooth as permanent restoration. By this procedure the original tooth remains intact.